Josephson current in a finite-size junction interrupting a superconducting ring

R. De Luca; T. Di Matteo; A. Tuohimaa; Jaakko Paasi

doi:10.1103/PhysRevB.59.9564

Josephson current in a finite-size junction interrupting a superconducting ring

R. De Luca, T. Di Matteo, A. Tuohimaa, Jaakko Paasi

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Abstract

We study the behavior of the Josephson current (Formula presented) flowing in a finite-size Josephson junction in a superconducting ring in the presence of an externally applied magnetic field H, taking into account the effect of the shielding currents. The set of self-consistent equations for the system can be solved explicitly for (Formula presented) in the small self-inductance coefficient limit for not negligible effective junction areas. It is found that the resulting (Formula presented) versus H curve presents a Fraunhofer-like prefactor modulating a periodic quasisinusoidal odd function.

Original language	English
Pages (from-to)	9564-9568
Number of pages	5
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	59
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.59.9564
Publication status	Published - 1 Jan 1999
MoE publication type	A1 Journal article-refereed

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10.1103/PhysRevB.59.9564

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abstract = "We study the behavior of the Josephson current (Formula presented) flowing in a finite-size Josephson junction in a superconducting ring in the presence of an externally applied magnetic field H, taking into account the effect of the shielding currents. The set of self-consistent equations for the system can be solved explicitly for (Formula presented) in the small self-inductance coefficient limit for not negligible effective junction areas. It is found that the resulting (Formula presented) versus H curve presents a Fraunhofer-like prefactor modulating a periodic quasisinusoidal odd function.",

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AU - Di Matteo, T.

AU - Tuohimaa, A.

AU - Paasi, Jaakko

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AB - We study the behavior of the Josephson current (Formula presented) flowing in a finite-size Josephson junction in a superconducting ring in the presence of an externally applied magnetic field H, taking into account the effect of the shielding currents. The set of self-consistent equations for the system can be solved explicitly for (Formula presented) in the small self-inductance coefficient limit for not negligible effective junction areas. It is found that the resulting (Formula presented) versus H curve presents a Fraunhofer-like prefactor modulating a periodic quasisinusoidal odd function.

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Josephson current in a finite-size junction interrupting a superconducting ring

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